Matrix LED Drivers

Matrix LED Drivers

The ISSI family of matrix LED drivers has been evolving to meet ever-expanding customer requirements. The first-generation matrix driver evolved to the second generation by incorporating an enhanced I2C bus interface. The third generation built on the success of Gen 1 and 2 to support even more LEDs, include detection/reporting of LED open or short faults and simplifies RGB LED support.

ISSI’s family of matrix LED drivers have been a success in the RGB gaming keyboard space. These drivers expand the matrix LED market by introducing its advantages and features to the control panel segment: white goods appliances, mixer panel, small backlight, and automotive applications.

Features
  • Supply voltage range: 2.7 V to 5.5 V
  • Current source outputs for row control:
    • 8 (IS32FL3738)
    • 4 (IS32FL3740)
  • Programmable matrix size with deghost function:
    • 6×8 (16 RGBs) (IS32FL3738)
    • 3×4 (4 RGBs) (IS32FL3740)
  • 1 MHz I²C-compatible interface
  • Selectable 3 auto breath modes for each dot
  • Switch current inputs for column scan control:
    • 6 (IS32FL3738)
    • 3 (IS32FL3740)
  • Auto breath loop features interrupt pin inform MCU auto breath loop completed
  • Auto breath offers128 steps gamma current, interrupt, and state lookup registers
  • LEDs in dot matrix:
    • Up to 48 (6×8) (IS32FL3738)
    • Up to 12 (3×4) (IS32FL3740)
  • 256 steps global current setting
  • Individual on/off control
  • Individual PWM control steps:
    • 512 (IS32FL3738)
    • 1024 (IS32FL3740)
  • Individual auto breath mode select
  • Individual open and short error detect function
  • Cascade for synchronization of chips
  • Package:
    • eTSSOP-28 (IS32FL3738)
    • eTSSOP-20 (IS32FL3740)
  • Automotive AEC-Q100 qualified (IS32FL3738)
IS32FL3738 Applications IS32FL3740 Applications
  • Automotive clusters
  • Dashboards
  • Automotive interiors
  • Mobile phones and other hand-held devices for LED display
  • Gaming devices (keyboard, mouse, etc.)
  • LED in white goods applications
Manufacturer